白毒鹅膏，又名白毒伞（Amanita verna）为伞菌目鹅膏菌科鹅膏菌属的真菌，是致死率极高的毒蕈。大型子实体（即蘑菇）出现在夏季和秋季; 它的菌盖, 菌柄和菌褶都是白色。

真菌形态特征

蕈伞凸面

广泛分布于全世界，夏季到秋季时，可在阔叶林或针叶林地上发现散生或群生的子实体。全株纯白色，菌盖属中型大小约5～10cm。有膜质菌环、根部有菌托。与一样是剧毒的鳞柄白毒鹅膏菌（Amanita virosa）很相似，但可以在其上滴氢氧化钾溶液会变黄色、菌柄上有鳞片、外型较大来做区别。

Amanita verna, commonly known as the fool's mushroom, destroying angel or the mushroom fool, is a deadly poisonous basidiomycete fungus, one of many in the genus Amanita. Occurring in Europe in spring, A. verna associates with various deciduous and coniferous trees. The large fruit bodies (i.e., the mushrooms) appear in summer and autumn; the caps, stipes and gills are all white in colour.